using System;

public class Program

{

    public static void Main()

    {

​

        string SelectedPlan;

        decimal deduction = 0;

        Console.WriteLine("Enter your plan name (F|B|K|E):");

        SelectedPlan = Console.ReadLine();

        switch(SelectedPlan)

        {

            case "F":

                deduction = 0;

                break;

            case "B":

                deduction = 4.65m;

                break;

            case "K":

                deduction = 7.85m;

                break;

            case "E":

                deduction = 5.50m;

                break;

            default:

                deduction = -1m;

                break;

        }

        if(deduction < 0)

        {

            Console.WriteLine("You entered an invalid Plan");

        }       

        else

        {

            Console.WriteLine("Your deduction for plan {0} is {1}", SelectedPlan, deduction);

        }

    }

}

​